As of today OMEGAMON DB2 PM/PE V5.1.1 is now generally available. In case of any confusion, OMEGAMON DB2 V5.1 has been available for a while. OMEGAMON DB2 V5.1 came out to coincide with the release of DB2 10 (if you are going to DB2 10 you need OMEGAMON DB2 V5.1 - prior releases do not support DB2 10).
What's in V5.1.1 that wasn't in V5.1? Well, several things including support for items that have been standard in the other OMEGAMON V5.1s, like self describing agents (SDA) and ITM 6.23 support. Probably one of the most interesting new features is support for the new enhanced 3270 user interface. Now you can run the new enhanced UI for z/OS, CICS, and DB2 (or the Big 3 as we sometimes call them).
For more information on OMEGAMON DB2 5.1.1 and other tools updates, here's a link: